Threat Composer Viewer — threat-composer-browser-extension

This extension lets you view web-accessible Threat Composer files (.tc.json) with one click. The full Threat Composer app is bundled into the extension, no external dependencies required.

Supported Integrations:

A "View in Threat Composer" button is added to:

• GitHub (including raw file URLs)
• GitLab (including self-hosted instances)
• Bitbucket
• Amazon CodeCatalyst

Features:

• Read-only viewing of complete threat models
• Quick access during code review without downloading files
• Works with public and private repositories
• Per-integration enable/disable toggles
• Custom URL patterns for self-hosted instances
• Debug mode for troubleshooting